Add accept method for Dispute

omise/__init__.py

@@ -1207,6 +1207,26 @@ def update(self, **kwargs):
                           self._instance_path(self._attributes['id']),
                           changed))
 
+    def accept(self):
+        """Accept the dispute.
+
+        Basic usage::
+
+            >>> import omise
+            >>> omise.api_secret = 'skey_test_4xs8breq3htbkj03d2x'
+            >>> dspt = omise.Dispute.retrieve('dspt_test_5mr57xawhq7j28az3ak')
+            >>> dspt.status
+            'open'
+            >>> dspt.accept()
+            <Dispute id='dspt_test_5mr57xawhq7j28az3ak' at 0x7ff4fcabddd0>
+            >>> dspt.status
+            'lost'
+
+        :rtype: Dispute
+        """
+        path = self._instance_path(self._attributes['id']) + ('accept',)
+        return self._reload_data(self._request('patch', path))
+
 
 class Event(_MainResource, Base):
     """API class representing an event in an account.

omise/test/test_dispute.py

@@ -22,7 +22,7 @@ def _makeOne(self):
             'location': '/disputes/dspt_test',
             'amount': 100000,
             'currency': 'thb',
-            'status': 'pending',
+            'status': 'open',
             'message': None,
             'charge': 'chrg_test',
             'created': '2015-03-23T05:24:39Z'
@@ -169,3 +169,24 @@ def test_update(self, api_call):
             'https://api.omise.co/disputes/dspt_test',
             {'message': 'Foobar Baz'}
         )
+
+    @mock.patch('requests.patch')
+    def test_accept(self, api_call):
+        dispute = self._makeOne()
+        class_ = self._getTargetClass()
+        self.mockResponse(api_call, """{
+            "object": "dispute",
+            "id": "dspt_test",
+            "livemode": false,
+            "status": "lost"
+        }""")
+
+        self.assertTrue(isinstance(dispute, class_))
+        self.assertEqual(dispute.status, 'open')
+
+        dispute.accept()
+        self.assertEqual(dispute.status, 'lost')
+        self.assertRequest(
+            api_call,
+            'https://api.omise.co/disputes/dspt_test/accept'
+        )